Question

give one example each of class 2 Lever where the levers is used as a force multiplier and where it is used as a machine to gain speed give the MA of this machines

Answer 1

A bottle opener, a wheel barrow. These machines' MA is always greater than 1 as it is a lever of class 2

Answer 2

One example of class 2 lever where lever is used as a force multiplier is a nutcracker.

1) One example of  2nd class lever where the lever is used to gain speed is a wheel barrow.

2) A class 2 lever is a type of lever where there is a resistance between effort and fulcrum.

3) The effort is applied on one side of the resistance and the fulcrum is on the other side.

4) The mechanical advantage of these kind of device is always greater than one.